Mold for manufacturing tiles, &amp;c.



No. 635,952. Patented Oct. 3|, I899. G. BASS.

MOLD FOR MANUFACTURING TILES, 8w.

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s Patented Oct. 3|, 1899.

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THE NORRIS PETERS co. ruom'umo WASHINGTON n c UNITED STATES PATENTOFFICE.

GEORGE BASS, OF NE\V YORK, N. Y.

MOLD FOR MANUFACTURING TILES, &.O.

SPECIFICATION forming part of Letters Patent No. 635,952, dated October31, 1899.

Application filed April 20, 1899. Serial No. 713,698. (No model.)

To ctZZ whom, it may concern:

Be it known that I, GEORGE BASS, acitizen of the United States, and aresident of the borough of Brooklyn, in the city of New York and Stateof New York, have inventeda new and useful Improvement in Molds for theManufacture of Tiles and other Articles, of which the following is aspecification.

This invention relates to molds which are fitted with plungers ofcorresponding form for the molding of clay and other plastic substances,but more particularly to those for the manufacture of flooring-tiles.The interiors of the molds heretofore used for the latter purpose havebeen worn away so rapidly in use that the molds have soon become uselessand had to be discarded.

The object of this improvement is to provide for the easy andeconomical. renewal of the worn-out molds; and to this end the invention consists in the combinations of moldboxes and interchangeableand renewable molds illustrated in the accompanying drawings andhereinafter described and claimed.

In the drawings, Figure 1 represents a plan of a multiple mold,illustrating one example of my invention; Fig. 2, a section in the line2 2 of Fig. 1; Fig. 3, a vertical section in the line 3 3 of Fig. 1;Fig. 4, a plan of another example; Fig. 5, a vertical section in theline 5 5 of Fig. 4..

Similar letters of reference designate corresponding parts in all thefigures.

Referring first to Figs. 1, 2, and 3, A A designate the mold-box, ofiron or steel, and B B two renewable steel molds therein. The mold-boxconsists of two membersA and A, arranged side by side and clampedtogether by screw-bolts G G. The molds consist of short pieces of steeltubing of a sectional form, the counterpart of the outline of the tilesto be produced, and are hardened. The cavities in the box which receivethe molds B B are formed partly in one and partly in the other member ofthe box. The said cavity in the memberA conforms to certain portions ofthe sides of each of the molds, and the cavity in the other member A ismore than large enough to contain the other portion of the sidesthereof, the spaces left outside of the molds in the said member A beingfilled with packing-pieces D D, which conform to the box member and tothe molds. To set up these packing-pieces and tighten up the molds,tightening screws E E are tapped into the mold box section Aand screwedup against and into notches e e in the said pieces, and these screws arefitted outside of the box member with jam-nuts e e. The clampingscrew-bolts O O and the tightening-screws E E all tend to hold the moldswith a direct clamping action in the lineof said bolts andtightening-screws, and the screws E E by their action on thepacking-pieces D D serve to clamp the molds in a direction transverse tothe lines of the bolts and screws. The securing of the molds is furtherassisted by a pin 1), which is driven through a hole in the member A ofthe box and into a hole drilled between the adjacent sides of thecontiguous molds, partly in one lining and partly in another.

The molds B B are of a height or depth less than the depth of the box,so that their up per ends being flush or thereabout with the top of thebox there isaclearance below them within the box, as shown at a a inFig. 2, to permit the pushing out from the molds of previously-moldedtiles by those subsequently molded.

The example of the invention shown in Figs. 4 and 5 differs from thatshown in Figs. 1, 2, and 3 and above described in that there is a largernumber of molds and the box is made of four separable members A A and AA, each of which forms one of four sides of the box and which are boltedtogether by screw= bolts 0 C. The molds are of such shape that theexteriors of the sides of any number of them may fit into each otherwhen they are assembled in a group. The two opposite members A A of thebox have formed at their ends wedge-shaped projections c c, which engagewith corresponding surfaces provided in recesses in the inner faces ofthe members A-A, so that when the screw-bolts C O are screwed up theytend to draw together all of the four members, those A A being drawn toward each other by the pull of the screws and those A A being drawn inby the wedges 0 c, and in this way the molds are very tightly clampedtogether within the box. The movement of the sides A toward each otherpro duced by the action of the sides A on the wedge shaped projections,which only requires to be very slight, is provided for by making theholes in the sides A for the bolts C a very little larger than thebolts, as indicated by dotted lines in Fig. 4. To guard additionallyagainst the displacement of the molds within the box, pins Z) are driventhrough holes provided in the sides of the box and enter holes in thesides of some of the-outer molds of the group, and screw-holes aredrilled between contiguous molds at the angles thereof to receive screws(Z d, which are screwed thereinto. This example shown in Figs. .1: and 5differs from that shown in Figs. 1, 2, and 3 in that instead of theinner faces of the mold-box members being made to conform to the sidesof the contiguous molds they are made straight and that instead ofdetachable filling-pieces,like those D in the first example,the spacesbetween the box m cmbers and the contiguous molds have a filling D of ametal more fusible than iron or steel- Babbitt metal, for examplewhichis poured into the said spaces in a molten state after the molds havebeen assembled and clamped up within the box.-

To replace worn-out molds by new ones, it is only necessary to unscrewthe bolts C C and draw back the pins 1) sufficiently to permit the wornmolds to drop or be knocked out of the box, after which the new ones areput in place and screwed up, as described.

The mold-box constructed as hereinabove described and having the moldsassembled and secured within it may be adapted to the bed of anysuitable press and the plungers for operation in the molds be attachedto the follower or movable head of such press; but as my inventionrelates only to the molds I have not thought it necessary to representby drawings either the plungers or any other parts of the press.

Vhat I claim as my invention is- 1. A multiple mold consisting of aseries of metal tubes each constituting a mold and the external form ofwhich is such that when assembled together in a group they will fit intoeach other, a mold-box consisting of separable members in which saidmolds are assembled, means for clamping said members together and uponthe molds, and metal fillings inserted in spaces between the saidmembers and the contiguous molds, substantially as herein described.

2. A multiple mold consisting of a series of metal tubes eachconstituting a mold and the external form of which is such that whenassembled together in a group they will fitinto each other, a mold-boxconsisting of separable members in which said molds are assembled, metalfilling-pieces between the said members and the contiguous molds,clamping-screws for clamping the box members together andtightening-screws for setting up the said filling-pieces, substantiallyas herein described.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two witnesses, this 19th day of April, 1899.

GEORGE BASS.

Witnesses:

FREDK. HAYNES, L. M. EGBERT.

